Rural Electrification Administration
Answer:
The correct answer is A. control the movement of substances in and out of the cell.
Explanation:
All cell membranes are made up of lipids and proteins. Lipids are organized in two closely adjoining sheets that form a lipid bilayer. This bilayer provides the basic structure of the membrane and acts as a permeability barrier (impermeable) for most water-soluble molecules. Cells live and grow by exchanging molecules with the surrounding environment and the plasma membrane acts as a barrier that controls the transit of molecules into and out of the cell. As the interior of the membrane (the lipid bilayer) is hydrophobic, the membrane tends to block the passage of almost all water-soluble molecules (which dissolve in water). Protein molecules, which are normally “dissolved” in the lipid bilayer, act as mediators or facilitators of almost all membrane functions, either by transporting specific molecules through it or by catalyzing membrane-associated reactions, such as synthesis of ATP.
Answer:
4. All answers are correct
Explanation:
Renaissance music sound bigger, fuller than medieval music because all of the following choices given in the question i.e Composers considered the harmony of the parts rather than just one melody superimposed above another. The bass register was used for the first time and the choral works had four, five, or six equal parts filled with melodic interest. This music is vocal and instrumental music written and performed in Europe during the Renaissance era.
Charles Cornwallis was the British general who surrendered at Yorktown, although he was a Lieutenant General;)
Hope this helped!
~Ash
